Linux Foundation Linux Foundation Certified SYSADMIN LFCS Questions & Answers

• Question 11:

  The output of the program date should be saved in the variable actdat. What is the correct statement?

  A. actdat=`date`

  B. set actdat='date'

  C. date | actdat

  D. date > $actdat

  E. actdat=date

  Correct Answer: A

• Question 12:

  Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?

  A. tune2fs -d 200 /dev/sda1

  B. tune2fs -c 200 /dev/sda1

  C. tune2fs -i 200 /dev/sda1

  D. tune2fs -n 200/dev/sda1

  E. tune2fs --days 200 /dev/sda1

  Correct Answer: C

• Question 13:

  Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)

  A. /etc/at.deny

  Correct Answer: A

• Question 14:

  Which of the following are requirements in order to run a shell script like a regular command from anywhere in the filesystem? (Choose THREE correct answers.)

  A. The user issuing the command must be in the group script.

  B. The script file must be found in the $PATH.

  C. The script file must have the executable permission bit set.

  D. The script must begin with a shebang-line (#!) that points to the correct interpreter.

  E. The file system on which the script resides must be mounted with the option scripts.

  Correct Answer: BCD

• Question 15:

  Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

  A. sshd

  B. ssh-agent

  C. ssh-keygen

  D. ssh-add

  Correct Answer: B

• Question 16:

  Which of the following details is NOT provided in any output from the netstat utility?

  A. broadcast services

  B. interface statistics

  C. masquerading connections

  D. network connections

  E. routing tables

  Correct Answer: A

• Question 17:

  Which of the following may occur as a consequence of using the command ifconfig? (Choose THREE correct answers.)

  A. New name servers may be added to the resolver configuration.

  B. Network interfaces may become active or inactive.

  C. The routing table may change.

  D. IP addresses may change.

  E. The system's host name may change.

  Correct Answer: BCD

• Question 18:

  Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)

  A. resolv

  B. dns

  C. remote

  D. files

  E. hosts

  Correct Answer: BD

• Question 19:

  Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

  A. 443

  Correct Answer: A

• Question 20:

  Which of the following SQL queries counts the number of occurrences for each value of the field order_type in the table orders?

  A. SELECT order_type,COUNT(*) FROM orders WHERE order_type=order_type;

  B. SELECT order_type,COUNT(*) FROM orders GROUP BY order_type;

  C. COUNT(SELECT order_type FROM orders);

  D. SELECT COUNT(*) FROM orders ORDER BY order_type;

  E. SELECT AUTO_COUNT FROM orders COUNT order_type;

  Correct Answer: B